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Vicom Systems FC-FC3 Manual de usuario Pagina 21

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CONFIDENTIAL [AK8999A/AW/AD]
MS1600-E-00 2014/05
- 21 -
7.2.5) Span Voltage Adjustment Circuit
VDD = 3, 3.3, 5V ± 10%, Ta = -40 to 105ºC, register default, unless otherwise note
Parameter Symbol Conditions Min. Typ. Max.
Units
Description
Measurement in test mode after offset voltage adjustment
Unadjusted
Span voltage
Vs01a VP-VN = 80mV
VDD = 5V
ESCR[0] = 1h
1910 2160 2410 mV
Vs01b VP-VN = 80mV
VDD = 5V
1590 1800 2010 mV
Vs02a VP-VN = 40mV
VDD = 3, 3.3V
ESCR[0] = 1h
930 1080 1230 mV
Vs02b VP-VN = 40mV
VDD = 3, 3.3V
770 900 1030 mV
Span adj. range Sc1+ ESC[7:0] = 00h
ESCR[0] = 1h
1.80 times
Sc1- ESC[7:0] = FFh
ESCR[0] = 1h
1.10 times
Sc2+ ESC[7:0] = 00h
ESCR[0] = 0h
3.00 times
Sc2- ESC[7:0] = FFh
ESCR[0] = 0h
1.56 times
Adj. Step Sc stp1 N = 0 - +255
ESCR[0] = 1h
(275-0.2*N)
/(153+0.2*N)
times
Sc stp2 N = 0 - +255
ESCR[0] = 0h
(275-0.2*N)
/(91+0.2*N)
times
7.2.6) Offset Temperature Drift & Sensitivity Temperature Drift Adjustment Circuit
7.2.6.1) Offset Temperature Drift Adjustment Circuit
VDD = 3, 3.3, 5V ± 10%, Ta = -40 to 105ºC, register default, unless otherwise note
Parameter Symbol Conditions Min. Typ. Max.
Units
Description
Measurement in test mode after offset voltage and span voltage adjustment
1
st
order coeff.
Adj. range
DO5+ EOTP,N[8] = 0h
EOTP,N[7:0] = FFh
VDD = 5V ± 10%
+36.8
mV/C
DO5- EOTP,N[8] = 1h
EOTP,N [7:0] = FFh
VDD = 5V ± 10%
-36.8
mV/C
DO3+ EOTP,N[8] = 0h
EOTP,N[7:0] = FFh
VDD = 3, 3.3 ± 10%
+18.4
mV/C
DO3- EOTP,N[8] = 1h
EOTP,N[7:0] = FFh
VDD = 3, 3.3 ± 10%
-18.4
mV/C
Adj. step DO5 stp VDD = 5V ± 10% 0.144
mV/
C
DO3 stp VDD = 3, 3.3 ± 10% 0.072
mV/
C
Note) Design reference value; no production test performed. The case of ESCR[0] = 1h.
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